+@item message-use-multi-frames
+@vindex message-use-multi-frames
+If non-@code{nil}, generate new frames. The default is @code{nil}.
+
+@item message-delete-frame-on-exit
+@vindex message-delete-frame-on-exit
+The @code{message-delete-frame-on-exit} variable says whether to delete
+the frame after sending the message or killing the message buffer. If it
+is @code{nil} (which is the default), don't delete the frame. If it is
+@code{ask}, ask wheter to delete the frame. If it is @code{t}, always
+delete the frame.
+